Shutdown at this age often happens when too much new information arrives at once without enough prior knowledge to anchor it. When everything feels unfamiliar, the brain pattern-recognition system has nothing to grab onto, and the system stalls. This is not a capability problem. It is a pacing problem. The Struggle stage is real and uncomfortable, and that discomfort is actually the signal that learning is trying to happen. When shutdown is frequent, run the Choice, Connection, Competence check: does your child have enough say in the pace and approach? Is the connection between you warm? And is the work sitting too far above their current skill level?
Let's back up a little and find the part you already know. We will build from there.